Research on the Geometry Nonlinearity of Wind Turbine Blade

Abstract:

It is presented that the nonlinear aeroelastic effect is considered for the dynamic response analysis of large scale horizontal wind turbine. The blade of wind turbine is built by composite laminate model using the finite element method. The unsteady aerodynamic loads are predicted with prescribed vortex wake method, which considers the aerodynamic-structural coupling effects. The aerodynamic loads are applied to the blade structure model, and the nonlinear dynamic aeroelastic equations are established. The equations are linearized and the blade modes are obtained at the static equilibrium position, thus the dynamic responses of a blade are calculated using the modal method. The results show that the geometry nonlinearity reduces the vibration amplitudes of the blade.

• Periodical: Applied Mechanics and Materials (Volumes 716-717)
• Pages: 569-572
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.716-717.569
• Online since: December 2014
• Authors: Di Tang*, Zhi Liang Lu, Bin Bin Lv, Tong Qing Guo
• Keywords: Aeroelasticity, Geometry Nonlinearity, Prescribed Vortex Wake Method, Wind Turbine

References

[1] J.W. Larsen and S.R.K. Nielsen. Non-linear dynamics of wind turbine wings [J], International Journal of Non-Linear Mechanics, 2006, 41(5): 629-643.

DOI: 10.1016/j.ijnonlinmec.2006.01.003

[2] R. Younsi, I. EI-Batanony and J. Tritsch. Dynamic study of a wind turbine blade with horizontal axis [J]. European Journal of Mechanics – A/Solids, 2001, 20(2): 241-252.

DOI: 10.1016/s0997-7538(00)01127-x

[3] YIN J C，XIE Y，CHEN P． Modal analysis comparison of beam and shell models for composite blades [A]. Asia-Pacific Power and Energy Engineering Conference [C]. Wuhan，China，(2009).

DOI: 10.1109/appeec.2009.4918484

[4] Dumitrache, A, Dumitrescu H. An aeroelastic model for horizontal axis wind turbines [C]. Numerical Analysis and Applied Mathematics, 2012, 1479: 1639-1642.

DOI: 10.1063/1.4756481

[5] Cardenas, D, Elizalde, H, etal. A coupled aeroelastic damage progression model for wind turbine blades [J]. Composite Structures, 2012, 94(10): 3072-3081.

DOI: 10.1016/j.compstruct.2012.03.034

[6] Hansen MOL, Johansen J. Tip studies using CFD and comparison with tip loss models [J]. Wind Energy, 2004, 7(4): 343-356.

DOI: 10.1002/we.126

[7] Coton, F.N., Wang, T. The Prediction of horizontal axis wind turbine performance in yawed flow using an unsteady prescribed wake model [J]. Proceeding of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1999, 213(1): 33-43.

DOI: 10.1243/0957650991537419

[8] Xie C C, Yang C. Linearization method of nonlinear aeroelastic stability for complete aircraft with high-aspect-ratio wings [J]. Sci China Tech Sci, 2011, 54: 403-411.

DOI: 10.1007/s11431-010-4252-5

[9] Wang TG, Wang L, Zhong W, etal. Large-scale wind turbine blade design and aerodynamic analysis [J]. Chin Sci Bull, doi: 10. 1007/s11434-011-4856-6.

DOI: 10.1007/s11434-011-4856-6